Pixel Passage Layout for Higher-Efficiency Inorganic LED Displays
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Solution Overview
Problem
Existing display devices face challenges in achieving optimal lighting efficiency, particularly in high-temperature environments, where inorganic light emitting diodes (LEDs) using inorganic materials as fluorescent materials exhibit higher efficiency but require improvements in pixel design for enhanced performance.
Innovation Solution
The display device incorporates a specific pixel layout with four passages for light emitting elements, each spaced apart and extending in intersecting directions, and includes alignment electrodes and connection electrodes to optimize electrical connections, enhancing lighting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If inorganic light emitting diodes are used to improve lighting efficiency, then lighting efficiency is improved, but device complexity increases due to required improvements in pixel design
Solution Approach 1:
The pixel is divided into multiple passages (first, second, third, and fourth passages) arranged in a specific pattern. Each passage contains light emitting elements, allowing the pixel to be segmented into functional units that can be independently optimized for lighting efficiency while maintaining overall pixel performance
Solution Approach 2:
The passages are arranged asymmetrically within the pixel structure, with specific spacing and orientation patterns that optimize light emission while simplifying the overall pixel design. The first and second passages extend in a first direction, while the third and fourth passages extend in a second direction, creating an asymmetric layout that improves lighting efficiency without excessive complexity
2Use of energy by moving object
If light emitting elements are densely packed to improve lighting efficiency, then lighting efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
By dividing the pixel into multiple distinct passages, the patent creates well-defined regions for placing light emitting elements. This segmentation provides clear manufacturing targets and simplifies the placement process, reducing the precision requirements compared to dense packing in a single region
Solution Approach 2:
Each passage is designed with specific local characteristics (spacing, orientation, position) that are optimized for its function. The first and second passages have different orientations than the third and fourth passages, allowing each region to be manufactured with appropriate local precision requirements rather than requiring uniform high precision throughout
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed pixel layout improves lighting efficiency by optimizing electrical connections and element placement, leading to enhanced performance in high-temperature environments.
Implementation Method 1
a first light emitting element disposed in the emission area; a second light emitting element disposed in the emission area; a third light emitting element disposed in the emission area; and a fourth light emitting element disposed in the emission area
Data Source
AI summary
A display device includes a bank defining an emission area; a first passage in which a first light emitting element is disposed in the emission area; a second passage in which a second light emitting element is disposed in the emission area; a third passage in which a third light emitting element is disposed in the emission area; and a fourth passage in which a fourth light emitting element is disposed in the emission area, wherein the emission area has a rectangular shape comprising a first side extending in a first direction and a second side extending in a second direction intersecting the first direction and having a length longer than the first side, and the first passage, the second passage, the third passage, and the fourth passage are spaced apart from each other, and each extends in a third direction intersecting the first direction and the second direction.